Title: The BaAnIV(PO4)2 (AnIV= Th; Np): a new family of layered double phosphates
Authors: WALLEZ GBREGIROUX D.POPA KarinRAISON PhilippeAPOSTOLIDIS ChristosLINDQVIST-REIS PatricKONINGS RudyPOPA Aurelien
Citation: EUROPEAN JOURNAL OF INORGANIC CHEMISTRY vol. 2011 no. 1 p. 110-115
Publisher: WILEY-V C H VERLAG GMBH
Publication Year: 2011
JRC Publication N°: JRC60734
ISSN: 1434-1948
URI: http://onlinelibrary.wiley.com/doi/10.1002/ejic.201000777/abstract
http://publications.jrc.ec.europa.eu/repository/handle/JRC60734
DOI: 10.1002/ejic.201000777
Type: Articles in Journals
Abstract: BaTh(PO4)2 has been synthesized by a wet chemistry route and the new isotype BaNp(PO4)2 by solid-state reaction. Although the former has been the subject of several studies since the early 1980s, the crystal structures of both compounds are reported here for the first time. Rietveld analysis shows Ba layers alternating with An(PO4)2 slabs along the a axis. Although those compounds are isostructural to RbEu(SO4)2, these phosphates can be seen as modified yavapaiite derivatives with increased coordination numbers for Ba (XIV) and Th/Np (VIII). Raman and electron absorption spectra highlight the similarities and differences with chemically related compounds. Keywords: Phosphates / Actinides / Solid-state structures / Layered compounds / Raman spectroscopy
JRC Institute:Institute for Transuranium Elements

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